Device for effecting changes in sound of musical instruments



FIG. 1 is a perspective view of the top, front and right side of a device for effecting changes in sound of musical instruments showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a front elevational view thereof; and,

FIG. 8 is a top reference plan view with the power turned on. 

The ornamental design for a device for effecting changes in sound of musical instruments, as shown and described. 